Drain-trap.



No. 772,091. PATENTED OCT. 11, 1904.

' A. W. EDWARDS.

DRAIN TRAP.

APPLICATION FILED JULY 15, 1903.

N0 MODEL.

Witnesses:- I mentor i atented October I1, 1904.

PATENT OFFICE.

ARTHUR W. EDWVARDS, OF

SACRAMENTO, CALIFORNIA.

DRAIN-TRAP.

SPECIFICATION forming part of Letters Patent No. 772,091, dated October11, 1904.

Application filed July 15, 1903 To all whom it may concern:

Be it known that I, ARTHUR W. EDWARDS, a citizen of the United States,residing at Sacramento, in the county of Sacramento and State ofCalifornia, have invented new and useful Improvements in Drain-Traps, ofwhich the following is a specification.

My invention relates to an improved trap for use in catch-basins,slop-hoppers, and the like or wherever the backflow of sewer-gas is tobe guarded against. Its object is to provide a simple efi ective trapwhich may be readily applied to present sewerage systems and which willpermit of easy access to the pipe or sewer leading from the hopper orcatch-basin.

It consists of the parts and theconstruction and combination of parts,as hereinafter more fully described, having reference to theaccompanying drawings, in which Figure 1 is a view of the device asapplied to an ordinary catch-basin. Fig. 2 is a sectional view of theinvention. Fig. 3 is a sectional view showing amodification of the same.

A represents a catch-basin such as is ordinarily placed or built in thebed of the street adjacent to the curb for the collection of storm andother waste water and adapted to discharge into a "pipe 2, connectingwith the sewer. Where these discharge-pipes are left open or unsealed,much inconvenience is experienced by pas'sers-by and others living inthe neighborhood, and sickness not infrequently results from theescaping sewer-gas.

My invention resides in the formation of a combined hingedgravity-actuated closure and water seal in connection with thecatch-basin or other reservoir and its outlet.

In the present instance I have shown a pipeelbow 3 of suitable sizehinged so as to close over the end of pipe 2 and having its lower endnormally dipping into water contained in the bottom of the reservoir toform a water seal and prevent the escape of gas.

Where the invention is to be applied to systems already in use, Iprovide a short metal sleeve 4, Fig. 2, having a peripheral flange 5intermediate of its ends. One end of the sec- Serial No- 165,671. (Nomodel.)

tion is adapted to telescope within and be ccmented to the outlet-pipe,the other end to project slightly into the basin or reservoir A and totelescope within elbow 3.

The elbow 3 when made of stone is surrounded at each end by a metal band6, each band having an eye 7, the one to engage with a hook member 8 onflange 5 above sleeve 4 and the other to be engaged by a hook or otherinstrument when the elbow is to be lifted to give access to thedischarge-opening, as indicated in dotted lines, Fig. 1. If it isdesigned to construct the elbows of metal, the eyes 7 may be madeintegral with the body of the elbows.

9 is a washer or gasket, of rubber or other suitable material,interposed between the end of the elbow and flange 5 and affording agastight seat for the elbow.

Fig. 3 shows a stone or like pipe-section with flange 5 formed integralwith it and a portion of the pipe extending beyond the flangeto enterthe elbow 3.

In operation the eye at one end of the elbow is engaged with hook 8 andthe elbow allowed to seat by gravity over the protuberant end of thesleeve 4, as in Fig. 2, or of pipe 2, as in Fig. 3, and to seat againstthe washer 9. The lower end of the elbow extending as it does below thelevel of the outlet-pipe and dipping into the water-bath effectuallyprevents any loackflow of gas from the sewer. Whenever the water in thebasin A rises above the level of the outlet-pipe, the excess flows ofi.Should it be desired to flush out the outlet-pipe, the elbow is engaged,as indicated indotted lines, Fig. 1, and turned on hook 8 as a pivot,being entirely detached therefrom and removed from the basin, ifdesired. On being reengaged by hook 8 the elbow immediately drops intoposition over the outlet.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. In a drain-pipe, the combination of a pipe, a connecting-elbowprovided with an eye adjacent to one end, a sleeve telescopicallyfitting the elbow and pipe and having a flange extending across themeeting ends thereof, said flange having means to engage said elbow-eye.

2. In adrain-pipe, the combination of a pipe, an elbow, and a connectionbetween said pipe and elbow adapted to be inserted into the pipe, saidconnection comprising a flanged sleeve, and means for pivotall ysuspending the elbow from the flange of said sleeve.

3. In a drain-pipe, the combination of an elbow and a sleeve telescopingtherewith and having a lateral projection intermediate of its ends, andcooperating hinge members carried by the elbow and said projection.

4. In a drain-pipe the combination of a pipe and an elbow said pipe andelbow composed of stone and said elbow having metal reinforces at theends, and a metal sleeve telescopically fitting the pipe and elbow andhaving a peripheral flange extending radially across the meeting ends ofthe pipe and elbow.

5. In a drain-pipe the combination of a pipe and connecting-elbow, metalrings fitted to the nesses.

ARTHUR W. EDWARDS. \Vitnesses:

LORMIE GAUME, A. B. REYNOLDS.

